#include<stdio.h>

#include"my_add.h"
#include"my_sub.h"

int main(){
    int a = 10;
    int b = 20;
    int ret = add(10,20);
   // printf("%d",ret);
    int ret2 = sub(10,20);
    //printf("%d",ret2);



    return 0;
}

